Sole-pressing machine.



E. N. PEBBLE.

sou: PRESSING 111101112113.

APPLICATION PILIJDATIC-J, 1910.

Patented Dec.31,1912.

A A (/04 4 M y W W frequently such UNITED STAElZ SEnTENT OFFICE.

DWIN N. PREBLE, F BEVERLY, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF IPATEBSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SOLE-PRESSING MACHINE.

Specification of Letters Patent.

Patented Dec. 31, 1912.

Application filed August 8. 1910- Serial No. 576,037.

citizen. of the United States, residing, at,

Beverly, in the county of Essex and State of llilassachusetts, have invented certain new and useful Improvements in Sole-Pressing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The, invention relates to sole pressing machines of that class which comprise cooperating sole pressing forms adapted to operate upon a sole before it is incorporated in a shoe.

Machines of this class are usually provided with upper fixed forms and lower forms which are movable vertically to and from the upper forms, and are alsoreciprocated horizontally from and toward a position of presentation into and out of alinement with the upper. forms. The forms are held on the fixed and movable form carriers so that they may be readily removed and replaced to adapt the machine for operating upon different styles or widely varying sizes of shoes. The horizontal position of the upper form is usually determined by devices which may be adjusted-to bring the'ball line of the form into position to register with the ball line of the reciprocating lower form. It is necessary to apply very heavy pressure to the soles in order to properly shape and mold them, and the shape of the molds is that the horizontal component of the pressure sustained by the tired mold puts a heavy strain upon the adjusting devices by which the mold is positioned. The horizontal component of the pressure upon the mold which tends to move it longitudinally is increased" and becomes excessive incase the upper mold is slightly out of adjustment, as is frequently the case. The heavy strain put upon the mold positioning devices 1s liable to injure them and render them defective, so that the operator is unable to properly position the fixed mold in the machine, or can secure the proper adjustment only with difficulty.

It is accordingly the object of the present invention to provide means for relieving the mold positioning devices from the strain due to the heavy pressure between the molds,

ahd it is a further object to provide means of tlns character which may be readily and conveniently adplsted by the operator to properly cooperate with the different molds which are placed in the machine, so that the proper adjustment of the devices may be secured without loss of time and consequent reduction in the amount ofwork turned out by the operator. To these ends the invention contemplates the provision in a sole pressing machine which is rovided with adjustable fixed mold, of an adjustable abutment engaging the mold and sustaining the longitudinal component of the molding pressure. With this construction the adjustable abutment forms a firm and rigid support for resisting the pressure tending to move the mold longitudinally and relieves the mold positioning devices from the strain tending to bend or ir' ire em.

devices for determining the position of the In certain constructions of sole molding machines the upper fixed mold is the female mold, and the molds are arranged with their heel'ends toward the rear of the machine. In these machines the horizontal component of the pressure between the molds tends to move the upper mold toward the rear, and the adjustable abutment should therefore be arranged at the rear of the mold in position to bear against the heel end of the mold. When so arranged, the abutment is in position where it is not conveniently accessible to the operator. A further feature of the invention accordingly contemplates the provision in a machine arranged as above set forth, of an adjustable'abutment arranged to engage the rear end of the mold, and actuating devices accessible to the operator while at the front of the machine, for adjusting the abutment.

The features of invention above referred to, as well as the further features of the invention which relate more or less to the specific construction and arrangement of the- 1 is a sectional thereto, and Fig. 2 is a bottom plan view with the lower mold removed.

The machine, a portion of which is illustrated in the drawings, is a double machine provided with two sets of cooperating sole pressing forms, the upper forms being stationary, and the lower terms being reciprocated simultaneously in opposite directions toward and from the upper forms, and also being reciprocated to bring them alternately into a position of presentation, and into alinement with the upper forms. The devices cooperating with each upper form are the same, and accordingly but a single set of forms and the devices associatedtherewith have been shown in the drawings.

As shown in the drawings, the upper form 1 is removably secured upon a form carrier '2 which is supported from the stationary cross-head 3,'and may be adjusted vertically by means of an adjusting wedge 4 in the usual manner. The lower form 5 is removably secured in the usual manner upon a slide 6 which is mounted to reciprocate horizontally upon a vertically reciprocating head in the usual and well-known manner. The upper fixed form 1 is the female form, and the forms are arranged with their heel ends toward the .lrear of the machine. The lower form, when-moved away from the upper form, is also moved forward into a position of presentation where the operator, who stands at the front of the 'machine, may readily remove the molded sole and place another solo in position on the form. The sole may be held in position on the lower form by positioning and gripping devices of usual construction (not shown).

The upper form 1 is provided on its upper face with a dovetail bar or rib 7 adapted to engage a corresponding groove formed in the under face of the carrier 2, so that the form may be readily removed and another iorm secured in its place. The position of the form on the form carrier is determincd by a nut 8 which is threaded on a bolt 9, and is provided with an annular groove arranged to be engaged by the up turried end 10 ot' the bar 7. The bolt 9 pivoted at 11 to the carrier, so that the bolt may be readily swung upto disengage it from the bar 7 when the mold is to be removed, and may be readily swung down into position to engage the bar when the mold is inserted in the machine. By turning the nut 8 on the bolt, the position of the mold 1 may be adjusted to bring the ball line into proper alinement with the ball line of the corresponding lower mold 5.

In "cases whens the molds are provided with ,a considerable curve orspring 12 in I the shank, the pressure of the lower mold toward he upp r mold applies a, heavy pressure to the u; per mold, tending to move it longitudinally toward the rear. lt' this force is resisted by the mold positioning devices, the bolt 9 is liable to become bent so that the positioning devices are ineffective to secure the proper positioning of the different molds used in the machine. In the construction illustrated, the strain upon the mold positioning devices is relieved by providing an abutment in the form of a backstop 13 which is arranged to engage the rear end of the upper mold. This backstop, in the construction shown, comprises a horizontal bar 14 which is pivoted at 15 to the mold carrier 2, and is provided with a lug 16 for engaging the rear end of the mold substantially in .line with its longitudinal axis. The free end of the bar 14 is engaged by the end of an adjusting screw 17 mounted in bearings 18 formed in a bracket 19 at the rear end of the mold support 2. The screw is provided with a keyway engaged by a key in one of the bearings 18, so that the screw is held from turning, but is free to move longitudinally through the bearings. A. gear 20 is mounted upon the screw between the bearings 18, and is provided with a screw thread engaging the thread of the screw so that the pinion forms a nut for adjusting the screw and through it the stop bar 14. In order that the stop bar 14 may be readily adjusted by the operator while standing at the front of the machine,

devices are provided for actuating the gear 20, which are readily accessible to the operator when in this position. These devices comprise a bevel gear 21 engaging the gear 20 and secured to a short shaft which is mounted in the bearings 22 on the rear of the mold support 2. The end of the gear carrying shaft is connected by a universal joint 28 with a shaft 24 which extends up over the cross-bar 3, aiid is provided at its upper end with an operating wheel 25. The upper end of the inclined shaft 24 is mounted in a bearing 26 which is pivotally supported upon the cross-bar 3.

lVith this construction the operator may conveniently adjust the back-stop bar 14 without moving from the position which he occupies during the operation of the ma:

chine, and may bring the stop-bar into engagement with the rear end of'the mold 1 after the mold has been properly positioned by the adjustment" lthe positioning nut- 8. During the operation of the machine the longitudinal pressure imparted to the mold 1 is sustained by the rigid bar 14 which directly engages the rear end of the mold, and the/mold adjusting or positioning devices are not subjected to any strain tending to'inju're them or render them defective.

While it is preferred to employ the construction and arrangement shown and described, it will be understood that this construction and arrangement is not essential, except so far as it is referred to in the ween/e claims, and may be varied without departing from the broader scope of the invention.

Having explainedthe nature and object of the invention, and specifically described one construction in which it may he embodied, What I claim is 1. A sole pressing machine, having, in combination, sole pr'x," 1g molds, a carrier upon which one oi the molds remoralit secured, adjustable dcvice.- for determining the position of the removable mold. and an adjustable abutment on the carrier engag ing the end of the mold and sustaining the longitudinal component of the sole molding; pressure, substantially as described.

2. A, sole pressing machine, -.haring, in combination, sole pressing molds arranged with their heel ends toward the back of the machine, a back-stop engaging the rear end of the female mold, and actuating devices accessible to the operator White at the front of the machine tor adjusting the backstop, substantially as descr bed.

A sole pressing machine, having, in combination, sole pressing molds arranged with their heel Finds toward the lhitli ot' the machine, mold positioning devices-atthe front end of the female mold t r retaining the mold in position longitudinally, and an atljustable backstop engaging the rear end oi. the female mold 'toi; sustaining;- the longitudinal component 01 the sole molding pressure, substantially as described.

4. A sole pressing n1a .:hine, having, in combination, sole pressing molds arranged with their heel ends toward the back oi the machine, levices at the front end at the female mold for det'crniiniinr its longitudh nal position, a backstop engaging the rear end of the mold, and actuating devices a cessible to the operator while i. t. the front ot' the machine or adjusting the back-stop, substantially as described.

5. A sole pressing machine, having, in combination, an upper fixed 'iemaie mold, a cooperating lower mold, adjustable devices and n oditical i for rcinovalily securing the upper mold in position, and a. permanent adjustableeback stop engaging the rear end of the upper mold for sustaining the longitudinal component of the sole molding pressure, substantially as desin'ibed.

i). A sole pressing machine, having, in mmibination, a tixed mold and a cooperating nmrable mold, a back-stop engaging the rear end ot the fixed mold for sustaining the longitudinal component of the sole molding pressure, and actuating devices accessible to the operator while at the front of the machine for adjusting the back-stop, substantially as described.

'7. A sole u'essing machine, having, in combination, sole pressing molds, devices for removably seti'uring one of the molds in position, and an adjustable abutment mounted imlepemlently oi the mold so as to permit independent removal of the mold and arranged to engage the end of the mold to sustain the longitudinal component of the sole molding pressure, substantially as described.

A sole pressing machine, having, in con'ihination, sole proshig molds, a stop bar l-ttor engaging the end of one oi" the molds and su:--tainin; the longitudinal component of the sole molding pressure, an adjusting screw 1.? engaging the bar, and devices for actuating the screw, substantiall as dcscribed.

i). A. sole pressing machine, having, in combination, sole pressing molds, a stop bar i i For engaging the end of one of the molds and sustaining the longitudinal comonent; of the sole molding pressure, an adjustinr. screw 17 engaging the bar, and actuating; devices for the screw extending, into position to he opt-rated by the operator when at. the trout oi the machine, substantially as described.

. EDWlN N. IREBLE.

Wi tnesses:

(hncs'rnn E. Romans, LAURA M. tiooomnun. 

